Two persons are holding a rope of negligible weight

Asked by admin @ in Economy viewed by 306 People

Two persons are holding a rope of negligible weight tightly at its end so that it is horizontal . A 15 kg weight is attached to the rope at the mid point which now no longer remains horizontal. The minimum tension required to completely straighten the rope is

Answered by admin @


The tension required to bring the string into horizontal position can be found out using the following formulae.


2Tsinx = mg


The following equation is true for body which attains equilibrium. Also, when the body will be in equilibrium the angle formed will be 0.

Therefore,


T = mg/2sin x , where x= 0

T = mg/ 2 sin 0, where the value of sin0 = 0

Then, the amount of tension required is infinite.



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